Global behavior of four competitive rational systems of difference equations in the plane (Q1040093)

Summary: We investigate the global dynamics of solutions of four distinct competitive rational systems of difference equations in the plane. We show that the basins of attractions of different locally asymptotically stable equilibrium points are separated by the global stable manifolds of either saddle points or nonhyperbolic equilibrium points. Our results give complete answer to Open Problem 2 posed recently by \textit{E. Camouzis} et al. [J. Difference Equ. Appl. 15, No.~3, 303--323 (2009; Zbl 1169.39010)].